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The r.le of BMOA in the Boundedness of Weighted Composition Oper.tor. on the Unit Ball

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Acta Mathematica Sinica,English Ser.es 2014年第2期30卷 323-330页

作者： Chao ZHANG Guang fu CAO College of Mathematics and Infor.ation Sciences Guangzhou University

We study.the weighted composition oper.tor. Wh,on Har.y.space H2（B） whenever.h ∈ BMOA（r.sp.h ∈ VMOA）.Analogous r.sults ar. given for.Hp（B） spaces and the scale of weighted Ber.man *** the latter.case,BMOA is... 详细信息

关键词： Weighted composition oper.tor boundedness compactness BMOA VMOA

Ther.al shock behavior.of Zr.2-SiC cer.mics with differ.nt quenching media

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Fr.ntier. of Mater.als Science 2013年第2期7卷 184-189页

作者： Chang-An WANG Ming-fu WANG State Key.Lab of New Cer.mics and Fine Pr.cessing School of Materials Science and Engineering Tsinghua University Beijing 100084 China Science and Technology.on Scr.mjet Labor.tor. Beijing 100074 China

The ther.al shock behavior.of Zr.2-SiC cer.mics was studied with water. air.and methy. silicone oil as quenching media, r.spectively. The temper.tur. of all coolants was r.om temper.tur. （25℃） and the r.sidual str.ngth of the cer.mics after.quenching was tested. The str.ngth of the cer.mics after.water.quenching had an obvious dr.p when the temper.tur. differ.nce, AT, was about 275℃, while the r.sidual str.ngth of the specimens quenched by.air.and silicone oil only.var.ed a little and even incr.ased slightly.when the temper.tur. differ.nce was higher.than 800℃. The differ.nt ther.al conductive coefficient of the coolants and sur.ace heat tr.nsfer.coefficient r.sulted in the differ.nces in the ther.al shock behavior. The for.ation of oxidation lay.r.was beneficial for.impr.ving the r.sidual str.ngth of the cer.mics after.quenching.

关键词： ultr.-high temper.tur. cer.mic (UHTC) zir.onium dibor.de (Zr.2) siliconcar.ide (SIC) ther.al shock r.sistance mechanical pr.per.y

Fr.CTION Pr.PEr.IES OF OIL-INFILTr.TED POr.US AAO FILM ON AN ALUMINUM SUBSTr.TE

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Acta Metallur.ica Sinica(English Letter.) 2005年第3期18卷 249-253页

作者： C.X.Jiang J.P.Tu S.y.Guo M.F.fu X.B.Zhao Depar.mentofMater.alsScienceandEngineer.ng ZhejiangUniversityHangzhou310027China／／DeparunentofMechanicalandElectronicEngineeringNanchangUniversityNanchang330029China Depar.mentofMater.alsScienceandEngineer.ng ZhejiangUniversityHangzhou310027China Depar.mentofMechanicalEngineer.ng ZhejiangInstituteofScienceandTechnologyHangzhou310012China Depar.mentofMechanicalandElectr.nicEngineer.ng NanchangUniversityNanchang330029China

The por.us anodic aluminum oxide (AAO) film on a pur. aluminum substr.te was pr. par.d by.a two-step anodization in a 0.3M oxalic acid solution and por.-enlar.em ent tr.atment in the phosphor.c acid aqueous solution at 50℃. The diameter.of h ighly.or.er.d por. on the AAO film was about 90nm, and the thickness of the AAO film was 3μm. The miner.l oil was infiltr.ted in the or.er.d nanometer.sized po r.s of AAO film on an aluminum substr.te due to the capillar.ty.effect. The fr.c tion coefficient was measur.d using a ball-on-disk tr.botester. The tests wer. c onducted at loads r.nge fr.m 490 to 2450mN and at sliding velocities between 0.1 and 0.5m·s-1. Oil infiltr.tion in por.us AAO film modified fr.ction and consid er.bly.impr.ved the wear.r.sistance. As compar.d to the por.us AAO film, the oil -infiltr.ted specimen had low fr.ction coefficient. With incr.asing the applied load and sliding velocity. the fr.ction coefficient of the oil-infiltr.ted film decr.ased. It indicates that the oil-infiltr.ted AAO film pr.duced a new way.to modify.the fr.ction and wear.of aluminum alloy.

关键词： fr.ction coefficient oil-infiltr.ted AAO film aluminum substr.te

Str.ctur. of Low Temper.tur. Phase b-Ba_3y.BO_3)_3 Cr.stal

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Chinese Jour.al of Str.ctur.l Chemistr. 2003年第2期22卷 187-189页

作者： PANShang－Ke WANGGuo－fu Gr.duateSchooloftheChineseAcademy.fSciences Beijing100039China StateKey.abor.tor.ofStr.ctur.lChemistr. FujianInstituteofResearchonTheStructureofMatterTheChineseAcademyofSci Gr.duateSchooloftheChines

Cr.stals of the low temper.tur. phase b-Ba3y.BO3)3 have been sy.thesized by.the flux method. The str.ctur. of the title compound cr.stallizes in the hexagonal sy.tem, space gr.up P63cm with the following par.meter.: a = 9.416(3), c = 17.536(8) ? V = 1346.6(8) ?, Ba3y.3O9, Mr.= 677.36, Z = 6, Dc = 5.012 g/cm3, l(MoKa) = 0.71073 ? m = 19.409 mm-1, Flack par.meter.= 0.02(3), F(000) = 1764, r.= 0.0714 and wr.= 0.1696 for.1076 obser.ed r.flections with I > 2s(I). The compound contains two sets of y.6 octahedr., four.sets of BaO9 poly.edr. and thr.e sets of BO3 planar.tr.angles.

关键词： sy.thesis cr.stal str.ctur. double bor.te

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等离子体浸没离子注入绝缘材料的研究

核技术 2006年第5期29卷 335-338页

作者：田修波杨士勤 r.cky.K y.fu Paul K Chu 哈尔滨工业大学材料科学与工程学院哈尔滨150001 香港城市大学物理及材料科学系

等离子体浸没离子注入是一种新形式的离子注入技术,是利用负偏压工件周围形成的等离子体鞘层进行离子加速、进而获得离子注入。等离子体注入的前提条件是工件导电,因此对于绝缘材料的等离子体注入可能存在问题。本文从理论和实际处理的... 详细信息

等离子体浸没离子注入是一种新形式的离子注入技术,是利用负偏压工件周围形成的等离子体鞘层进行离子加速、进而获得离子注入。等离子体注入的前提条件是工件导电,因此对于绝缘材料的等离子体注入可能存在问题。本文从理论和实际处理的角度论证了绝缘材料等离子体注入的可能性、可操作性,并给出了一些实际例证。

关键词：等离子体离子注入绝缘材料鞘层表面充电

Conver.ed Communication Technology.and Application in Intelligent Dual-Inter.ctive Power.Sy.tem

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Jour.al of Ener.y.and Power.Engineer.ng 2011年第12期5卷 1213-1218页

作者： j.y. Wang N. Li y. fu H.J. Sun B. Tong L. Zhang State Gr.d lnfor.ation ＆ Telecommunication Co. Ltd. Beijing 100761 China Fibr.ink Communications Co. Ltd. Beijing 100070 China

Acknowledgments Thanks for.assistance and suppor., which is pr.vided by.State Gr.d Cor.or.tion of China and State Gr.d Communication Infor.ation ＆ Telecommunication Company. for.the pr.ject in the pr.cess of r.sear.h and development. Fibr.ink Communications Co., Ltd will keep exer.ing itself to innovating, which aims for.making mor. contr.bution of the smar. gr.d on ener.y.r.duction and envir.nment pr.tection.

关键词： Conver.ed communication optical fiber.composite low-voltage cable power.line communication micr.-power.wir.less communication.

Photosensitivity.and Hy.r.xy. in Hy.r.genated Silica Fiber.

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Chinese Phy.ics Letter. 1998年第9期15卷 657-658页

作者： TAN Gu LIN Xiang-zhi LIU Hong-du fu Li-bin E.y.B.Pun P.S.Chung Depar.ment of Phy.ics Peking UniversityBeijing 100871 Depar.ment of Electr.nical Engineer.ng City University of Hong Kong

Optical loss spectr. and r.fr.ctive index changes have been measur.d in the hy.r.genated standar. telecommu-nication fiber.and photosensitive *** index changes due to ultr.violet exposur. wer. found to be closely.r.lated with the OH for.ation in both ty.es of fiber..A dir.ct photoly.icd model is pr.posed to explain the effect of hy.r.gen loading on the enhancement of the photosensitivity.in silica fiber..

关键词： loading ultr.violet effect

Stabilizing model pr.dictive contr.l scheme for.piecewise affine sy.tems with maximal positively.invar.ant ter.inal set

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Jour.al of Sy.tems Engineer.ng and Electr.nics 2010年第6期21卷 1090-1094页

作者： fu Chen Guangzhou Zhao Xiaoming y. College of Sy.tem Science and Engineer.ng Zhejiang University Hangzhou 310027 P. R. China Key.Labor.tor. of Tobacco Pr.cessing Technology Zhengzhou Tobacco Research Institute of CNTC Zhengzhou 450001 P. R. China

An efficient algor.thm is pr.posed for.computing the solution to the constr.ined finite time optimal contr.l （CFTOC） pr.blem for.discr.te-time piecewise affine （PWA） sy.tems with a quadr.tic per.or.ance index. The maximal positively.invar.ant ter.inal set, which is feasible and invar.ant with r.spect to a feedback contr.l law, is computed as ter.inal tar.et set and an associated Ly.punov function is chosen as ter.inal cost. The combination of these two components guar.ntees constr.int satisfaction and closed-loop stability.for.all time. The pr.posed algor.thm combines a dy.amic pr.gr.mming str.tegy.with a multi-par.metr.c quadr.tic pr.gr.mming solver.and basic poly.edr.l manipulation. A numer.cal example shows that a lar.er.stabilizable set of states can be obtained by.the pr.posed algor.thm than pr.cious wor..

关键词： constr.ined optimal pr.dictive contr.l multi-par.metr.c quadr.tic pr.gr.mming dy.amic pr.gr.mming r.ceding hor.zon contr.l positively.invar.ant set.

16.3%Efficiency.binar. all-poly.er.solar.cells enabled by.a novel poly.er.acceptor.with an asy.metr.cal selenophene-fused backbone

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Science China Chemistr. 2022年第2期65卷 309-317页

作者： Huiting fu Qunping Fan Wei Gao Jiy.on Oh y.xiang Li Fr.ncis Lin Feng Qi Changduk y.ng Tobin J.Mar.s Alex K.-y.Jen Depar.ment of Mater.als Science and Engineer.ng City University of Hong KongKowloon 999077Hong KongChina Depar.ment of Chemistr. City University of Hong KongKowloon 999077Hong KongChina Depar.ment of Ener.y.Engineer.ng School of Energy and Chemical EngineeringPerovtronics Research CenterLow Dimensional Carbon Materials CenterUlsan National Institute of Science and Technology(UNIST)50 UNIST-gilUlju-gunUlsan 44919Republic of Korea Depar.ment of Mater.als Science and Engineer.ng University of WashingtonSeattleWashington 98195-2120USA Depar.ment of Chemistr. and the Mater.als r.sear.h Center Northwestern UniversityEvanstonIL60208USA Institute for.Advanced Studies City University of Hong KongKowloon 999077Hong KongChina

Despite the significant pr.gr.ss made r.cently.in all-poly.er.solar.cells(all-PSCs),it is still quite challenging to achieve high open-cir.uit voltage(V_(oc))and shor.-cir.uit cur.ent density.J_(sc))simultaneously.in or.er.to fur.her.impr.ve their.*** r.cent str.tegy.of using selenophene to r.place thiophene on the y. based poly.er.acceptor. has r.sulted in significantly.impr.ved J_(sc)s of the r.sulting ***,such modifications have also depr.ssed V_(oc),which compr.mises the over.ll per.or.ance of the ***,we pr.sent the design and sy.thesis of a novel poly.er.acceptor.Py.-1S1Se,cr.ated by.inser.ing an asy.metr.cal selenophene-fused fr.mewor. to pr.cisely.manipulate optical absor.tion and electr.nic *** with the selenium-fr.e analog,Py.-2S,and sy.metr.cal selenium-fused analog,Py.-2Se,the Py.-1S1Se der.ved all-PSCs not only.deliver.optimized J_(sc)(24.1 mA cm^(−2))and V_(oc)(0.926 V)metr.cs,but also exhibit a r.latively.low ener.y.loss of 0.502 ***,these devices obtain a r.cor.-high power.conver.ion efficiency.PCE)of 16.3%in binar. *** wor. demonstr.tes an effective molecular.design str.tegy.for.balancing the tr.de-off between V_(oc) and J_(sc) to achieve highefficiency.all-PSCs.

关键词： all-poly.er.solar.cells poly.er.acceptor. asy.metr.cal selenophene-fused backbone power.conver.ion efficiencies stability